TNReady 7th Grade Science Atomic Structure 7.PS1.1

Front

What is the part of an atom that contains the protons and neutrons?

Back

Nucleus

Front

What makes up the nucleus of an atom?

Back

Protons and neutrons

Front

Which atom has more protons, neutrons, and electrons: lithium or helium?

Back

Lithium has more protons, neutrons, and electrons.

Front

What are the charged particles in an atom that are negatively charged?

Back

Electrons

Front

Where are electrons located within an atom?

Back

Electrons are in motion outside the nucleus.

Front

What is the charge of protons?

Back

Positive

Front

What is the charge of neutrons?

Back

Neutral (no charge)

Front

What is the charge of electrons?

Back

Negative

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.